A: A blood moon is a deep reddening of the moon caused by the Earth passing between the moon and the sun. During the period of the eclipse, light from the sun... Full Answer >
Sometimes, bones are the only accessible source of DNA, thanks to their structure, which preserves DNA comparatively well and for a long time. The main problems of DNA extraction from bones are DNA degradation due to environmental factors and the presence of soil-derived inhibitors like humus acids [1â10].
âScientists have found the oldest DNA evidence yet of humansâ biological history. But instead of neatly clarifying human evolution, the finding is adding new mysteriesâ. The femur bone found in cave was analysed by Dr. Matthias Meyer (geneticist Max Planck Institute for Evolutionary Anthropology).